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タイトル: | Flow Synthesis of Plasmonic Gold Nanoshells via a Microreactor |
著者: | Watanabe, Satoshi https://orcid.org/0000-0002-5058-4337 (unconfirmed) Hiratsuka, Tatsumasa Asahi, Yusuke Tanaka, Asumi Mae, Kazuhiro Miyahara, Minoru T. |
著者名の別形: | 渡邉, 哲 |
キーワード: | plasmonic particles core–shell particles microfluidics heterogeneous nucleation seed-mediated growth |
発行日: | 5-Aug-2014 |
出版者: | wiley |
誌名: | Particle & Particle Systems Characterization |
巻: | 32 |
号: | 2 |
開始ページ: | 234 |
終了ページ: | 242 |
抄録: | Gold nanoshells with tunable surface plasmon resonances are a promising material for optical and biomedical applications. They are produced through seed-mediated growth, in which gold nanoparticles (AuNPs) are seeded on the core particle surface followed by growth of the gold seeds into a shell. However, synthetic gold nanoshell production is typically a multistep, time-consuming batch-type process, and a simple and scalable process remains a challenge. In the present study, a continuous flow process for the seed-mediated growth of silica–gold nanoshells is established by exploiting the excellent mixing performance of a microreactor. In the AuNP-seeding step, the reduction of gold ions in the presence of core particles in the microreactor enables the one-step flow synthesis of gold-decorated silica particles through heterogeneous nucleation. Flow shell growth is also realized using the microreactor by selecting an appropriate reducing agent. Because self-nucleation in the bulk solution phase is suppressed in the microreactor system, no washing is needed after each step, thus enabling the connection of the microreactors for the seeding and shell growth steps into a sequential flow process to synthesize gold nanoshells. The established system is simple and robust, thus making it a promising technology for producing gold nanoshells in an industrial setting. |
著作権等: | This is the peer reviewed version of the following article: Watanabe, S., Hiratsuka, T., Asahi, Y., Tanaka, A., Mae, K. and Miyahara, M. T. (2015), Flow Synthesis of Plasmonic Gold Nanoshells via a Microreactor. Part. Part. Syst. Charact., 32: 234–242, which has been published in final form at http://dx.doi.org/10.1002/ppsc.201400126. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/200217 |
DOI(出版社版): | 10.1002/ppsc.201400126 |
出現コレクション: | 学術雑誌掲載論文等 |
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